Draft-regulator for heating-furnaces



(No Modell.) y

' R. A.MAY.

DRAFT RBGULATGR FOR HEATING PURNAGES.

No. 472,305; Patented Apr. 5., 1892.

XQWWM EOMDOLPMAM PATENT OFFICE.

RUDOLPH A. MAY, OF AKRON, OHIO.

DRAFT-REGULATOR FOR HEA-TING-FURNACES.

SPECIFICATION forming part of Letters Patent No. 472,305, dated April 5,1892. Application filed December l, 1891. Serial No. 413,637. (Nomodel.)

To all whom it may concern:

Beit known that I, RUDOLPH A. MAY, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented a certain new and useful Improvement in Draft-Regulators forHeating- Fnrnaces, of which t-he following is a specification.

My invention has relation to improvements in devices for regulating` thedraft in heatingfurnaces by reducing or closing the entrance of air tothe fire or by retarding the draft by introducing air into theuptake-fine, or both.

The object of my invention is to provide new and improved devices bywhich the draftdoor and damper-door may be operated and regulated from apart remote from the furnace, as when the furnace is situated in thecellar or basement and the regulator is situated in an upper room. V

My invention consists in the peculiar and novel construction,arrangement, and combination of parts hereinafter described, and thenspecifically pointed out in the claim, reference being had to theaccompanyingdrawings, forming a part of this specification.

In the accompanying drawings, in which similar referelilce-nnmeralsindicatelike parts in the different views, Fig'nre-l is an outlinedrawing showing the application of my improved apparatus to a furnace;Fig. 2, a front elevation of my improved draft-regulator; Fig. 3,acentral vertical transverse section of the same, and Fig. 4 a reduceddetail of the winding-pulley hereinafter described.

Referring to these drawings, l is a case of cast metal, saucer or basinshaped in form, which may be plain or ornamented, as desired, and havingears 2, with which it may be attached by screws or other device to anyselected surface. On the outer face of this case is a semicircular dial3, bearing words, figures, or other indicia to direct the movement orlocation of the operating-handie, beneath and concentric with which is anotched segment 4. On the inside of this case l is a pulley 5, (shownreduced in Fig. 4,) having at one side a iiange, its other side restingagainst the inner face of said case,

which thereby constitutes an opposite iange or guard for the chain orcord hereinafter mentioned. In the face of this pulley is a socket 6 toreceive and hold a concealed spring 7, which constantly forces outwardthe longer end of a lever 8, this lever being connected with the pulley4 by a bolt 9 and having a pointer to indicate its position on the dial,anda handle by which it is manipulated. This lever is sufficiently freeon the bolt 9 to rock thereon, and has at this pointer end a tooth orprojection arranged to engage and rest in one of the notches in thesegment 4, and be thereby retained, its opposite end being normallyforced outward by the spring 7. Connected with the pulley 5 atsubstantially the same point are two chains l0 1l, which, passing underand over guide-pulleys (shown in Fig. l) and respectively to thedraft-door l2 and damper 13, are arranged vwhen the pointer ofthe lever8 is central to allow both doors to close by gravitation, but when thelever is rocked either to the right or left to open the draft or checkdamper, respectively. On these chains are Weights 14 l5 to keep eachchain taut above its respective door when slackened by the opening ofthe opposite door.

I have referred to chains for operating the dampers; but it Will beobvious that wire or other cords may be employed for the purpose.

I claim as my invention- In a draft-regulator for heating-furnaces, thecombination of the case having anotched segment, the ianged pulleyjournaled on its inner face and having a spring-socket, of the levermounted and arranged to rock on said pulley-pivot and engage saidnotches and rotate said pulley anda spring interposed between the saidpulley Aand lever to canse said level' to engage said notches,substantially as shown and described.

In testimony that I claim the above I hereunto. set my hand.

RUDOLPH A. MAY.

